Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
The main navigation is using JS, will this have a negative impact on SEO?
-
Hi mozzers,
We just redesigned our homepage and discovered that our main nav is using JS and when disabling JS, no main nav links was showing up. Is this still considered bad practice for SEO? https://cl.ly/14ccf2509478
thanks
-
Thanks Jose!
-
Googlebot does not render JavaScript
We hear very often about JavaScript rendering is the assumption that the crawler is responsible for the rendering. But that's not the case. The rendering is done by the indexer (from Google Caffeine).More specifically, the Web Rendering Service (WRS), which is part of Google Caffeine. And this is exactly where the second great difficulty lies in the area of JavaScript SEO.
Gary Illyes says: "Also, to clarify, WRS is a subsystem of Caffeine, just like the PageRanker (cos yes, we still use it) or the canonicalization algorithm."
The process flow between the crawler and the indexer:
HTML files are downloaded.
CSS and JavaScript data will be downloaded in parallel.
WRS (Web Rendering Service) (part of Google Caffeine) is used to run JS.
WRS renders all files.
Now Google Caffeine can index the content if necessary.
And that's when Googlebot can crawl new links.
Why is that a problem? For the crawler to be able to enter the content and follow the links, it must first pass the data to the indexer. The indexer renders the content and returns it to the crawlers. Only now can the crawler see the content and follow the links. On the next page, the game starts again. Page by page. (many processes)Unlike conventional pages, where the crawler crawls numerous pages and, after crawling, passes everything collectively to the indexer. (few processes)
This process presents another challenge to search engines.
Regards
-
The only bad SEO Practice regarding JS that I've of is trying to hide the JS files from Search Engines, apparently, Google needs to render a whole page as it indexing it; so blocking any JS (& CSS for that matter) isn't a good thing.
-
Hi There,
JS rendered UI isn't negative, it is however not a good practice also.
You can find complete information to the concept of JS rendered pages and UI on this link, https://www.portent.com/blog/seo/javascript-bad-for-seo.htm .
I hope this helps.
Regards,
Vijay
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Does content in collapsible menus negatively affect SEO or featured snippets?
We want to confirm whether content in collapsible menus negatively affects SEO and/or featured snippets on Google. We're hoping to add a menu to answer some frequently asked questions and attract featured snippets, while also creating a positive user experience/not clogging up the page. Here is an example of the style of menu we're using now, the troubleshooting menu: http://www.lynden.com/help/index.html Appreciate your help!
Intermediate & Advanced SEO | | RyanD.1 -
Lightboxes and SEO
Do lightboxes (AKA popup boxes when you click "learn more" type CTAs) have any negative effect on SEO? We are looking at revamping our sites to have more of a tiled approach, and a lightbox with summary content popping out with additional CTAs, directing to pages with more information or free trial pages. Is there any downside to this approach from an organic perspective? is there anything specific to keep in mind when creating these if not?
Intermediate & Advanced SEO | | Chris81980 -
SEO Impact of High Volume Vertical and Horizontal Internal Linking
Hello Everyone - I maintain a site with over a million distinct pages of content. Each piece of content can be thought of like a node in graph database or an entity. While there is a bit of natural hierarchy, every single entity can be related to one or more other entities. The conceptual structure of the entities like so: Agency - A top level business unit ( ~100 pages/urls) Office - A lower level business unit, part of an Agency ( ~5,000 pages/urls) Person - Someone who works in one or more Offices ( ~80,000 pages/urls) Project - A thing one or more People is managing ( ~750,000 pages/urls) Vendor - A company that is working on one or more Projects ( ~250,000 pages/urls) Category - A descriptive entity, defining one or more Projects ( ~1,000 pages/urls) Each of these six entities has a unique (url) and content. For each page/url, there are internal links to each of the related entity pages. For example, if a user is looking at a Project page/url, there will be an internal link to one or more Agencies, Offices, People, Vendors, and Categories. Also, a Project will have links to similar Projects. This same theory holds true for all other entities as well. People pages link to their related Agencies, Offices, Projects, Vendors, etc, etc. If you start to do the math, there are tons of internal links leading to pages with tons of internal links leading to pages with tons of internal links. While our users enjoy the ability to navigate this world according to these relationships, I am curious if we should force a more strict hierarchy for SEO purposes. Essentially, does it make sense to "nofollow" all of the horizontal internal links for a given entity page/url? For search engine indexing purposes, we have legit sitemaps that give a simple vertical hierarchy...but I am curious if all of this internal linking should be hidden via nofollow...? Thanks in advance!
Intermediate & Advanced SEO | | jhariani2 -
Will the use of lightbox affect SEO?
I am looking to condense a features list on my pricing page. it is currently a static list however I want the user to click a button and a full list of standard features will pop up in a lightbox. How will this affect my SEO? Can Google read content in a lightbox?
Intermediate & Advanced SEO | | ParkerSoftware0 -
How much does dirty html/css etc impact SEO?
Good Morning! I have been trying to clean up this website and half the time I can't even edit our content without breaking the WYSIWYG Editor. Which leads me to the next question. How much, if at all, is this impacting our SEO. To my knowledge this isn't directly causing any broken pages for the viewer, but still, it certainly concerns me. I found this post on Moz from last year: http://moz.com/community/q/how-much-impact-does-bad-html-coding-really-have-on-seo We have a slightly different set of code problems but still wanted to revisit this question and see if anything has changed. I also can't imagine that all this broken/extra code is helping our page load properly. Thanks everybody!
Intermediate & Advanced SEO | | HashtagHustler0 -
Domain Forwarding - SEO Impacts?
I have a site that has been active for years - thinkbiglearnsmart.com. Awhile ago I had purchased about 50 domain names that were relevant to my company. I still have those urls and would like to use them to point to different pages on my site - just because they have good key words in the URLs. For example - one is dreamweavertrainingclassesonlinelive.com. Currently they are all redirecting to my homepage. A. is that hurting me? B. I would like to redirect to the more relevant page. ie the page dedicated to Dreamweaver training (http://thinkbiglearnsmart.com/dreamweaver-creative-cloud-training-course/ ) Will this hurt my Dreamweaver keyword for example because there is already a 301 redirect on that page from a very old Dreamweaver link which was something like thinkbiglearnsmart.com/dreamweaver C. On my hosting account where I can select where the URL forwards to - it has an option for "Location forwarding" and "Frame forwarding" - currently they are set to Frame forwarding - which one is best? Any help is much appreciated!!! Thank you!
Intermediate & Advanced SEO | | webbmason0 -
Use of subdomains, subdirectories or both?
Hello, i would like your advice on a dilemma i am facing. I am working a new project that is going to release soon, thats a network of users with personal profiles seperated in categories for example lets say the categories are colors. So let say i am a member and i belong in red color categorie and i got a page where i update my personal information/cv/resume as well as a personal blog thats on that page. So the main site is giving the option to user to search for members by the criteria of color. My first idea is that all users should own a subdomain (and this is how its developed so far) thats easy to use and since the domain name is really small (just 3 letters) i believe subdomain worth since personal site will be easy to remember. My dilemma is should all users own a subdomain, a subdirectory or both and if both witch one should be the canonical? Since it said that search engines treat subdomains as different stand-alone sites, whats best for the main site? to show multiple search results with profiles in subdomains or subdirectories? What if i use both? meaning in search results i use search directory url for each profile while same time each profile owns a subdomains as well? and if so which one should be the canonical? Thanks in advance, C
Intermediate & Advanced SEO | | HaCos0 -
Should I nofollow the main navigation on certain pages?
We have several large Ecommerce sites with hundreds of links on each page. I have been trying to think of ways to focus our internal linking to increase certain pages relevancy. My thought was to put nofollow in the main navigation (since there are hundreds of links there controlled by dropdowns) and only follow the links on each page for the products we are selling and promoting (15-20 links). I would still be using a sitemap that includes the links. Is this a terrible idea? if a link is nofollowed in the main navigation does that still count as the one mention for google if it points to the same page that a normal link points too that is in the content of the page? since all of the main navigation is the same on every page of the website would it be good to only put nofollow on the subpages/subsections and leave the home page navigation alone (that would allow the spiders to crawl all of those links on the home page but not crawl those same links on the subsections where I could then focus the linking).
Intermediate & Advanced SEO | | bigtimeseo0